Browse 253,500+ mountains 4k wallpapers stock videos and clips available to use in your projects, or start a new search to explore more stock footage and b-roll video clips. Waterfall with fresh water ...

April 4 (Reuters) - The Sahara Desert is one of Earth's most arid and desolate places, stretching across a swathe of North Africa that spans parts of 11 countries and covers an area comparable to ...

Editor’s note: A version of this story appeared in CNN’s Wonder Theory science newsletter. To get it in your inbox, sign up for free here. Picture the Sahara, and an inhospitable landscape of ...

Fast becoming mainstays of gamers and creative pros, 4K monitors are falling in price—but getting more complicated to buy. Here's how to shop for an ultra-high-definition (UHD) display ...